Question

If alpha and beta are the zeroes of the pilynomial 2y2+7y+5,find alpha+beta+alpha×beta

Answer 1

Answer:

Step-by-step explanation:

2y² + 7y + 5 = 0

Here a = 2 , b = 7 , c = 5

α,β are 2 zeroes

So sum of the zeroes = α + β = - b/ca= -7/2

Product of zeroes = αβ =  c/a = 5/2

Now just put the values

α + β + αβ = ( α + β) + αβ

= -7/2 + 5/2

= -2/2 = -1

So required answer is -1

Hope This Helps You!